Extreme Animals: The Toughest Creatures on Earth

We humans are such a bunch of sissies! We can't stand the cold, we can't stand the heat, we can't do without food, or water, . . . and a few minutes without air is enough to finish us off." Luckily, not all life forms are so fragile. Arctic musk oxen endure temperatures of negative 75 degrees Fahrenheit; tiny blackpoll warblers migrate between North and South America in one nonstop eighty-hour flight-and the tardigrade can fold up its limbs and survive conditions like those in outer space. Full-color art. Index. Glossary.